How is this magic trick done?

This trick is most commonly known as the Voodoo Ash trick. It is a very simple trick to perform. First you must know how to force a card. The most simple way to force a card can be learned by going to http://www.unityroundtable.com/hinduforce.html which teaches you how to do the Hindu Force. You can also use what is known as a Svengali Deck and can be purchased at any magic store or on Ebay.

Once you know what your force card is going to be, write the name of that card on your arm with some magicians wax or a bar of soap. This will leave a small amount of residue on your arm that the ashes will stick to.

Now all you have to do is force the card, have it written on paper, burn the paper and then rub the ashes on your arm.

Another cool trick to do using this technique is to perform a trick called "1089".

Use the wax or soap to write the numbers 1089 on your arm. Then ask a person to write down any three numbers, then reverse those numbers and subtract the smaller from the larger. Then have them reverse the numbers of that answer and add the previous answer and the new number together, the answer will always be 1089 but they don't know this. Now just have them write the answer on another piece of paper, burn it and rub the ashes on your arm.

For a more detailed explanation of the 1089 trick, visit http://www.unityroundtable.com/1089.html

alright forst of all he probably used a force

a force is when a magician has u pick what the magician wants u to pick fairly simple.

next because he already knew wat ure card would b it as simple as acting as thogh u dont kno the card

finnaly he probably used make up to hide his arm and by rubbing with the ash he probaly showed u a temporary tattoo

The magician has two people in the box. One is the "head" (usually and audience member) and the other is the "legs". They saw between the two people and it looks like one person cut in two halves.

he probably put the card up his sleeve and hid the other (same one).....